一种识别液体中粒状物的数字图象法软件的基本原理

本文介绍了一种识别液体中粒状物的数字图象法软件的基本原理,说明了软件中确定背景灰度门槛值的原则,发展了从背景中分离粒状物并对粒状物的大小和数目进行统计的算法。对整个软件进行了初步验证。     

NiTi合金表面氧化对镍离子释放的影响

采用原子吸收分光光度计,分别测试经机械抛光和高温氧化后的NiTi合金样品在人体生理模拟液中镍离子的释放速度,结果表明NiTi合金表面氧化膜的形成可以有效地减少镍离子的溶出.     

INFLUENCE OF POLYMER CHARACTERISTICS AND MELT-SPINNING CONDITIONS ON THE PRODUCTION OF HIGH RANDOMNESS 60PHB/PET THERMOTROPIC LIQUID CRYSTAL COPOLYESTER FIBER

Six samples of linear high randomness 60PHB/ PET thermotropic liquid crystal copolyesters are made by melt copolymerization at 290℃ , whose randomness about 0.955 is measured by the discernible 'H-NMR spectrometer. High tenacity, high module fiber is prepared by melt spinning in liquid crystal phase. The effect of molecular weight, shear rate, temperature as well as spinning drawn ratio on the mechanical behavior of 60PHB / PET copolyester fiber are shown that, lower shear rate (2~ 10 s~(-1)), higher temperature melting (300℃ ), lower temperature spinning (280℃ ) and higher molecular weight are favourable to the increase of the fiber mechanical properties. With the variance of drawn ratio, fiber mechanical property has a transition point due to traversion from shear-orientation to drawn-orientation. The copolyester fiber has high crystallinity, high orientation at the crystalline region, high chain orientation and high regular fibrillar structure.     

泡沫的持液量研究

泡沫的持液量（ｈ，ｍｇ／ｃｍ３）是泡沫的基本特性之一．本文对形成泡沫的起泡剂浓度、增粘剂浓度、气体流量和温度等因素对Ｈ的影响及变化规律作了研究，并对Ｈ与泡沫表观粘度和泡沫半衰期的相互关系作了描述，对泡沫的实际应用具有一定的指导意义．     

硼铁矿高炉冶炼过程中铀的物化行为

硼铁矿中含有微量铀，采用液态核乳胶照相，铀的价态分析，Ｘ射线衍射分析，电子探针等手段，测定了矿石中的铀以晶质铀矿物形成存在。矿石经高炉冶炼大部分ＵＯ３被还原成ＵＯ２在渣中富集，渣中的铀仍以晶质铀矿物形式存在。铀与其它矿物镶嵌关系及颗粒度大小均发生了变化。     

Experimental Observables on Nuclear Liquid Gas Phase Transition

Progress on nuclear liquid gas phase transition （LGPT） or critical behavior has been simply reviewed and some signals of LGPT in heavy ion collisions, especially in NIMROD data, are focused. These signals include the power-law charge distribution, the largest fluctuation of the fragment observables, the nuclear Zipf law, caloric curve and critical exponent analysis etc.     

电厂汽轮发电机组漏氢处理

针对汽轮发电机组发电机漏氢严重使得安全生产受到极大威胁的情况,文章比较全面地分析了故障产生原因,给出了较好的解决办法,使发电机每天漏氢量大大减少,符合厂家及电力行业要求。     

生物滴滤塔净化中低浓度H2S气体的挂膜实验研究

本文通过对两种填料处理硫化氢气体的挂膜实验研究,表明挂膜方法、填料性能、温度、PH值、入口浓度等均影响挂膜效果与硫化氢去除率,并且得出陶粒挂膜启动时间比阶梯环快。     

果胶溶液粘度的研究

本文研究了浓度、温度、酸度、Ｃａ２＋、糖等因素对果胶溶液粘度的影响，在酸度为０．９ｇＨＣｌ／１０Ｏｍｌ下来胶容液的粘度最低、而Ｃａ２＋，糖在研究的范围内对果胶溶液粘度的影响不大。     

流体非线性声学参量B／A的分子热力学研究

提出流体非线性声学参量Ｂ／Ａ的体积模量表述，证明了Ｂ／Ａ是流体体积模量的函数，研究了理想气体、硬球液体Ｂ／Ａ的性质，得到硬球体系液体的Ｂ／Ａ表达式．为用热力学、分子热力学方法计算流体的Ｂ／Ａ提供了理论依据